The hammer head of stone knocking machine is classified according to the material into manganese steel hammer head, alloyed manganese steel hammer head, high chromium alloy hammer head, bimetal composite hammer head, tungsten titanium alloy hammer head, ceramic composite hammer head, they play their advantages in different working conditions. Alloyed high manganese steel hammer is suitable for use in the condition with iron and large impact force. High chromium alloy hammer is used in the condition of large abrasion and medium impact force. Tungsten inlaid titanium alloy hammer and ceramic composite hammer are suitable for the operation with sufficient budget and high working efficiency. The specific choice should be based on their actual working conditions and the main factors to consider a comprehensive reference.